The CMS regional calorimeter trigger system detects signatures of electrons/photons, taus, jets, and missing and total transverse energy in a deadtimeless pipelined architecture. This system contains 20 crates of custombuilt electronics. Recent changes to the Calorimeter Trigger have been made to improve the efficiency and purity of jet and triggers. The revised algorithms, their implementation in hardware, and their performance on physics signals and backgrounds are discussed.